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Finding the Fourth Proportional to 267,788.70, 400,905.45 and 260,012.70

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Solution

The fourth proportional to 267,788.70, 400,905.45 and 260,012.70 is: 389,264.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,788.70 : 400,905.45 = 260,012.70 : x
  2. Step 2: Convert to fraction form
    267,788.70/400,905.45 = 260,012.70/x
  3. Step 3: Cross multiply
    267,788.70x = 400,905.45 × 260,012.70
  4. Step 4: Simplify right side
    267,788.70x = 104,240,508,499.22
  5. Step 5: Solve for x
    x = 104,240,508,499.22/267,788.70
  6. Step 6: Final answer
    x = 389,264.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.